Fire-alarm system.



C. F. CHRISTMAN.

FIRE ALARM SYSTEM.

APPLICATION FILED MAY19. |914.

Patented June 22, 1915.

THE NORIS PETERS CO.. FHoTO-Llvlfo. WASHINGTON. D. C.

' a enna-ins n..,c1 1n1sr1vin1v, or WINsLowARIzoNA.

Y. *i1-14.33503 i.

v To all whom t may concern Y Y v Beit known that VLfGrL'iRms F. CHRIST- MAN,-a'citizen of the .United States, residing atl ylllfinslowmn thecountyof Navajo, State 5 oArizona, have inventedcertain new and useutImprovementsjn Fire-,Alarm Systo1be a full, clear, and-exact description of s make; and use the same.

This yinvention relates Ato `ire alarms.

The principal object of the kinvention is to provide. a fire :alarm forftowfns wherein an y audiblesignal is used ltocall volunteer; fire- .menifrom their homes orplaces of business,

the signal to 'be operated' through the ordil v nary telephone call common ,in all .fsmall towns.

'l ',Asecondfobject of4 the. invention` the.y

provision,v inan alarmvof'this character, of

meansto ythrovvinto operation amotor-at thetimethat thesignal is being lgiven.

v {.fWith the above and other objects in view fthe. invention consists injgeneral of certain vnovel details of yconstruction and vcombination*k oflparts v hereinafter .'ully described, e illustrated.:inft'hev accompanying drawings, andspecicaflly claimed?.` y

f Inthe accompanying'drawings, like char-Y '.acters of-:referenceindicate like partsv in z f the several views, and z`-ll`igure 1 is anele- Vvation of'an apparatus showing this invention with the electric circuitconnected thereto'shown' in diagram. Figg2is a vertical secti'on of: vthe circuit closerl l-used herewith. Fig. 3 isa section-on the'linev 3-Y3 of Fig. 2. k A Y In.v carrying outl the objects rof thev invenitionvthere4 is Vprovidedla suitabletank or reservoir 10 andleading from, this `airtank or reservoir isa',Y pipe 11 which carries on Vitsupper endjajwhistlef`12-of such sizeand type. as to befreadilyjheard throughout-the v,district which Y'isdesired to be covered by 45. vthe alarm.` In the pipe" 11 is provided a valvel2 whichis controlled by a magnet 13 Ysofthatzwhen the magnet Vfis 4energized the valvewillopen' and when `the magnet is deenergized the valve will'be closed by the actionof, a spring v14: connected to the .valve Y leverll'atoneend and `to the pipe 11 at the other;V Ofi; this reservoir 10 is a popy valve 16 providedswith an extended stem 17 care Vryinga.` contact ybar -18 which engages the y gfixedpcontact 139, this -construction being of 3; `ianypreferred.form.` fConnected to one of Application led May 19, 1914;v Serial No. 839,610.

f I te'ms' and'I; dohereby declare the following thefinvention, such `asffwillV enable others .iskilledin the arttowhich it appertains to.

` be established.

f i rien-ALARM sYsTnM.

y Specification of Letters Patent.- Patented June 1915"..

these contacts 19 is a line wirev20-while to the other lContact 19 is connected a wire 2.1

which extends 'to a motor 22. Y This motor 22 is connected through a train of gearing 23 with a crank disk'24 connected to the pitman 25 of Van air pump 26 which is in turn connected to thereservo'ir 10 lby means of a supply pipe 27. V- i Y At 22S-is af-magnetic'ally controlled circuit `icloserthe magnet of vwhich :is-shownl at 29 land leading'from-this circuitcloser is a line Qa-wire 30 and a wire 31 which isconnecte'd Vto the motor 22. In .order to energize the `magnet 29 and13l there is providedia bat- .ftery 32 one polev of which is ygrounded as" vfat 33. yThe other pole of'this battery isconnectedby a wire 34 with thefmagnet'29 and from said magnet a wire 35v leads to Athe magnet 13. From the ymagnet 13 a wire36 leads to an Vannunciator', the ,annunciator magnets being indicated at 37 and being connected in multiple to the Wire 36. From each of these annunciator magnetsY leads a `wire' 38 which `extends to the circuit closer 4r39 of a telephone. LIt is of coursenecessary Ato haveseparate circuit closers on'the telephones but the telephone line wires 'are used for the purpose of transmission. y l In the operation of the'device'if a` re lbreaksfout at. any place the nearest tele* phonic circuit closer is kclosedlwhereupon a current will ow from the. battery 32 through the magnet 29, magnet 13, Vand one of the magnets 37 corresponding to th`e-.ci\r cuit closer which is operated. This closes a circuit through the motor and starts the k motor to work. At the Sametime the valve l 12 is opened and the whistle 12 blown'.y

Alsovtheannunciator drop'governed by the respective magnet 37 dropsand discloses, in the central station, the exact location of the ire. The motor continues to operate and thewhistle toblow as*y long as the circuit closer remains closedbutthis operation may be stopped by opening a switch 40 in the wire 33. If the air pressure kbecomes too great the pop valve will open and thus break the circuit from the line wire 20 through themotor so that the motor will stop. This will not however stop the blowing of the whistleas the circuit through the magnets will still remain closed. If the air pressure drops the pop valve will of course close and the motor circuit will again f The preferred form of my pop valve is Y ed top and bottom apertures 40` reg 'speotively The, bottom aperture beingse- U reservoir has reached apredeternnineilpreslfY :is niadefoff conductive 'rn'aterial 'an'dfis''pro-y I #iff videdwith downwardly projectingarms18.5- .Witnesses':

-eent'erof the'valve 44 by 'nie'an-sotafhut 46,

and beyondfth'ei casingp- A Geil yspring'47 Surrounds-the'rval Y upper surnfajeefo he fshel'ff43. Theplug-'48V is provided 'with 'a Centralaperturevandhave Y ing a peripheralfthfrad 4{on}its-lowerportion fr f engaglng'thethreadsof'thelaperture 4l5`thi-s 'lower surface @being fcrc'ed doiwii upon 'the i spring 47 Y- for producing i o'nfthe l Yspring '47 which-'tantasbinding-posts. 5 fro'ni 4the 'Yalve isteni 1 7. Line wires 20- and Qlengag'e-the'llindiig posts; and are secured contacts y19. Seeuredfztotheupper eXtrenii-- 2 1,143,809 p Y 'A hen the Valve44 is in its'seat 43 vvcon points Y'will engage certain pointsQ df'olosethe"Current through the WiresQ andQl. When however, on account f eoes'iie pressure the Val've44 is raised ing exteriorly a'ngedand interiorly threa cured. as above set forth to the air're'sorvoir.' Below [the thread of the Ytopy aperture the 1e ontaetfp'oints Y55 willY be displaced from casinglv is 1o'yli'n'drieal"interiorly throuigh-l 'oontaotmints 19 and theoircuit between the' out most of its length andat the-bottom :of yuiresg20-. and 21Sl he broken. To equalize the the cylindrical porton42isan annular shelf pressure lbetweenthe interior of the casing 43 constituting-1a Valve seat vadapted-to and the outer airWhen the Valve isv operated. gage the 'outer edge vofthe underside of' the Y `p'rovidedlin thel Vcasing Valve 44,=sad-Va1ve 44has a peripheral pfa'ok# the air.VVV goes out Whenthe ing ring 45 to'enable tto snugly fen-gagethe risesl and enters.;the.-.casin` Wh interior-'WalllSof-the` easingwhengthe valveiis I 1` in motion.l The valve-"stein -l7- secu-red tothe JT er hasilius been ioeo kind described said valvev ste'mextendng upwardlythrough @stem 17am-,engages the Y 1 struction of this inifentioniunithoutdep" "ingkfrolnthemateralpriniples thereof. .It

' not herefore'fde'sred to confine r'the inten#A tio a'ot `form kherein` shown add tension jlne cessaiy1'Stg/prevent 1 the `-va 1;ve e4 from'` beingraised before the 'ai-rinthe air f suref'jlMoreoVerethe fertioalrapertureofthe plug houses for "fslidalol'e engafge'r'nent Taf pOrnetsyandfaiseres'ofvoireuitol sers conne ed inni'ul'tiple through saidfinagnets." *In testimony :whereof lafhxniy tsigna tur inthegpresenoe of tw VWi esses.

thereto by the nuts 53; Qn the upper {eX-"5 At 'the extremityof the 'arms being oontaetj "55 the-v'flength ofthe 'arms l8-beingy TATashington,D.'(12f 1 Y 

